Method and use involving naphthalene sulphonate salt(s) and polyethylene oxide, to improve retention and drainage

ABSTRACT

The present invention relates to a method and a use of naphthalene sulphonate salt(s) under granulated form or as a condensed or diluted solution, and a solution of one or several polyethylene oxide having a molecular weight varying from 1×10 6  to 13×10 6 , allowing for a mixture comprising lignocellulosic particles and an aqueous medium to significantly improve the retention of particles such as fines and fibres, on a wire screen and the drainage of the aqueous medium.

BACKGROUND OF THE INVENTION

1. Field of Invention

The present invention relates to a method and a use of naphthalene sulphonate salt(s), under granulated form or as a condensed or diluted solution, and a solution of polyethylene oxide having a molecular weight varying from 1×10⁶ to 13×10⁶, allowing for a mixture comprising lignocellulosic particles and an aqueous medium to significantly improve the retention of particles such as fines and fibres, on a wire screen and the drainage of the aqueous medium.

Advantageously, a particles retention, especially a retention of fines and fibres can be achieved for kraft, sulphite (high and low yield), bisulphite, mechanical, OPCO, BTCMP, TCMP, BCMP, hard wood, such as oak, birch, maple, elm, wild-cherry, soft woods such as conifere trees, and TMP pulps and any mix in any proportion of two or more types of pulp.

Application of the invention maybe in the following means:

any washer, thickener, save-all, disc filter or drum

filter in any pulp making process;

any pulp machine, board machine or paper machine in time

production sector;

any clarifier or flotation or fibre separation unit in the effluent treatment process, including krofta, posseidon, sedimentation clarifier, but not limited to these;

any equipment used in the deinking process, included or not above.

2. Description of the Related Art

Up to now, it was known to use polyethylene oxide to improve from a mixture comprising lignocellulosic fines and fibres, and an aqueous medium, a retention of fines and fibres on a wire screen and improve a drainage of the aqueous medium.

SUMMARY OF THE INVENTION

The Applicant has now surprisingly found that a method involving a combined use of one or several naphthalene sulphonate salt(s), under granulated form or advantageously as a condensed or diluted solution, and a solution of one or several polyethylene oxide having a molecular weight varying from 1×10⁶ to 13×10⁶, in admixture with a mixture of lignocellulosic particles and an aqueous medium, allows to improve a retention of said particles on a wire screen and a drainage of said aqueous medium. This combined use shows a synergistic effect. A condensed naththalene sulphonate salt means a solution saturated with said salt, for example a condensed sodium naphthalene sulphonate salt means an aqueous solution containing about 41-46% of said salt.

More particularly, the invention relates to an improvement in a method for the production of paper and analogous products. This improvement is characterized by the fact that one or several naphthalene sulphonate salt(s), said salt(s) being under granulated form or advantageously as a condensed or diluted solution, and a solution of one or several polyethylene oxide having a molecular weight varying from 1×10⁶ to 13×10⁶ are admixed with a mixture comprising lignocellulosic particles such as fines and fibres, and an aqueous medium, being understood that polyethylene oxide is admixed with said mixture when said mixture already contains at least a part of said naphthalene sulphonate salt(s).

The invention also relates to the use of one or several naphthalene sulphonate salt(s), said salt(s) being under granulated form or advantageously as a condensed or diluted solution, and a solution of one or several polyethylene oxide having a molecular weight varying from 1×10⁶ to 13×10⁶, in admixture with a mixture comprising lignocellulosic particles, such as fines and fibres, and an aqueous medium, to improve a retention of said particles on a wire screen and a drainage of the aqueous medium.

Advantageously, the naphthalene sulphonate salt(s), especially a sodium naphthalene sulphonate salt, is (are) uniformly dispersed in the mixture before introducing one or several polyethylene oxide. Preferably, sodium naphthalene sulphonate should be applied preferably 30 seconds before the salt(s) get(s) in contact with the polyethylene oxide to thus give enough time to the salt to condition particles, such as fines and fibres.

Preferably, in a pulp and paper plant, the admixture of naphthalene sulphonate salt(s) with a mixture of lignocellulosic fines and fibres and aqueous medium may be applied anywhere in the system and advantageously not between fan pumps and a head box. It could be applied in the white water system (wire pit), mixing tank, in the preparation of clay system or any tank that could be in contact with fibre giving on the machine, preferably in the mixed pulp tank. The polyethylene oxide solution may be applied preferably between the fan pump and the head box, but it is also possible to apply it before the fan pump and remain efficient, for example between the mix tank and the fan pump.

Advantageously, one or several naphthalene sulphonate salt(s), said salt(s) being under granulated form or advantageously as a condensed or diluted solution, and a solution of one or several polyethylene oxide having a molecular weight varying from 1×10⁶ to 13×10⁶ are admixed with a mixture comprising lignocellulosic fines and fibres and an aqueous medium to define a pumpable pulp.

Advantageously, one or several naphthalene sulphonate salt(s), said salt(s) being under granulated form or advantageously as a condensed or diluted solution, and a solution of one or several polyethylene oxide having a molecular weight varying from 1×10⁶ to 13×10⁶ are admixed with a mixture comprising lignocellulosic fines and fibres and an aqueous medium to define an aqueous suspension.

Advantageously, said aqueous suspension is either of the type intended to be laid on a wire screen of a paper machine to form a sheet of paper or of a pulp machine, or of the type defining a white water collected in a wire pit of a paper machine or pulp machine. This white water may be partially or totally recycled as an affluent of a step for preparing a pumpable pulp comprising lignocellulosic fines and fibres and an aqueous medium, or passed at least in part with other waste water through a clarifier. This white water charged with naphthalene sulphonate salt(s) and polyethylene oxide contribute to make the clarifier more efficient.

Advantageously, said aqueous suspension is of the type intended to be laid on a wire screen of a paper machine to form a sheet of paper or of pulp machine type, wherein a white water collected in a wire pit of the paper machine or of a pulp machine and essentially consisting of a part of said previous suspension not retained on the wire screen and still containing naphthalene sulphonate salt(s) and polyethylene oxide, is recycled to a step for preparing either a pumpable pulp or a fresh aqueous suspension intended to be laid on aforesaid wire screen, being understood that said recycled white water contributes to the admixture of a part of the sulphonate salt(s) and polyethylene oxide with the mixture.

Preferably, an equilibrium is set between the amount of naphthalene sulphonate salt(s) and polyethylene oxide retained on the wire screen and the amount of naphthalene sulphonate salt(s) and polyethylene oxide collected in the white water in the wire pit and recycle to the preparation of either a pumpable pulp or a fresh aqueous suspension intended to be laid on the wire screen, to thus allow to admix to said pulp or fresh aqueous suspension intended to be laid on the wire screen, only the amount of naphthalene sulphonate salt(s) and polyethylene oxide retained in the sheet of paper or in the pulp.

Advantageously, naphthalene sulphonate salt(s) are selected from the group consisting of sodium, potassium, ammonium, calcium and aluminium salt(s).

Advantageously, polyethylene oxide has a molecular weight varying from 4,5×10⁶ to 12×10⁶.

Advantageously, is further admixed to said mixture at least one enhancer selected from the group consisting of:

a polyaluminium silicate sulphate;

a polyaluminium sulphate;

a sodium aluminate;

polyaluminium chloride;

magnesium hydroxide; and

bentonite.

Advantageously, polyethylene oxide may be admixed with the mixture of lignocellulosic particles, such as fines and fibres, and an aqueous medium to represent from 10 to 700 grams per ton of dry matter of said mixture, preferably from 30 to 100 grams per ton of dry matter of said mixture.

EXAMPLE

On a paper machine having a capacity of 600 T of newsprint per day (i.e. a paper machine known under the trade name BELBAE 3 - VERTICAL), a pulp resulting of a blend of 45% of sulphite pulp, 50% of mechanical pulp and 5% of kraft pulp was used.

The example was carried out without and with a condensed solution of sodium naphthalene sulphonate and a solution of a mix polyethylene oxide having a mean molecular weight ranging between 7 to 8×10⁶ , according to the invention.

The present invention will be better understood with reference to the following figures in which:

FIGS. 1 to 6 show variations of drainage without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIGS. 7 to 9 show the sheet strength without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIG. 10 shows retention of first press without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIG. 11 shows average consistency of wire without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIG. 12 shows head box consistency without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIG. 13 shows dosage of process with polyethylene oxide;

FIG. 14 shows dosage of process with sodium naphthalene sulphonate salt;

FIGS. 15 to 22 show opacity and whiteness without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIG. 23 shows a sheet formation without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIG. 24 shows consistencies of white water returns without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIGS. 25 and 26 show tonnage of white water transferred without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide;

FIG. 27 shows fibre losses in sewer without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide; and

FIG. 28 shows drainage related to temperature without and with a combined use of sodium naphthalene sulphonate and polyethylene oxide.

The following results were obtained.

FIGS. 1 to 28 show several variations obtained by using a combined use of a condensed solution of sodium naphthalene sulphonate salt (identified process par 1169) and a solution of a mix of polyethylene oxide having the aforesaid mean molecular weight (identified process PND 1100), in aforesaid example. In those figures, informations appearing at the left of a dark vertical line are without the use of naphthalene sulphonate salt(s) and polyethylene oxide, and information appearing at the right of the dark vertical line are according to the invention.

                  TABLE I                                                          ______________________________________                                         SUMMARY OF RESULTS                                                             ITEM          PRE-TRIAL  TRIAL     GAIN                                        ______________________________________                                         Runnability   Good       Good      No change                                   Retention - 30 kg/day                                                                        43.4%      48.3%     +4.9%                                       40 kg/day     43.4%      50.4%     +7.0%                                       Opacity - 45 g/m.sup.2                                                                       91.9       92.5      +0.6                                        48 g/m.sup.2  93.2       93.8      +0.6                                        Brightness    60.6       60.5      -0.1                                        Bleach consomption                                                                           2.09       2.28      0.19                                        (kg/tonne)                                                                     Saveall                                                                        capacity      15435 1pm  20077 1pm +4642 1pm                                   cloudy cons.  0.098%     0.067%    -0.031%                                     clear cons.   0.087%     0.050%    -0.037%                                     Pump 716 - consistance                                                                       0.128%     0.048%    -0.080%                                     tonnage       7.87 t/d   2.48 t/d  -5.39 t/d                                   Steam usage - dryers                                                                         23.5 t/hr  2.48 t/td -0.5 t/hr                                   silo          8.7 t/hr   0 t/hr    -8.7 t/hr                                   Formation (N.U.I.)                                                                           7.7        7.7       0*                                          Fiber loses                                                                    from p.m.     7.6 t/d    5.1 t/d   -2.5 t/d                                    from mill     17.4 t/d   13.6 t/d  -3.8 t/d                                    to river      3.7 t/d    3.0 t/d   -0.7 t/d                                    ______________________________________                                          *EXCEPT AT RETENTIONS OVER 54%                                           

                  TABLE III                                                        ______________________________________                                         DOSAGE, RETENTION AND CONSISTENCIES                                            DOSAGE                                                                         1100    1169                 CONSISTENCIES                                     kg/j    kg/j   RETENTION     Toiles                                                                               Head box                                    ______________________________________                                          0       0     43.4%         0.57% 1.01%                                       30      300    48.3%         0.47% 0.91%                                       40      400    50.4%         0.43% 0.87%                                       ______________________________________                                    

                  TABLE IV                                                         ______________________________________                                         BRIGHTNESS OF FINES                                                                      SAMPLES TAKEN JULY 16, 1992                                                                       Wires                                                       Paper     Headbox  E.B.                                              ______________________________________                                         BRIGHTNESS  58.2        56.3     53.2                                          A*          -0.48       -0.09    +0.18                                         B*          4.74        3.16     2.41                                          ______________________________________                                    

                  TABLE V                                                          ______________________________________                                         OPTIC CHARACTERISTICS                                                                                    ACCORD-                                                                        ING                                                                            TO THE                                                                BEFORE   INVEN-                                                                TRIAL    TION                                                                                2          2                                    CHARACTERISTICS                                                                              GRADE    AVG     STD  AVG   STD                                  ______________________________________                                         Opacity       48 g/m.sup.2                                                                            93.2    0.36 93.8  0.29                                               45 g/m.sup.2                                                                            91.9    0.30 92.5  0.32                                 Brightness    48 g/m.sup.2                                                                            60.5    0.33 60.3  0.30                                               45 g/m.sup.2                                                                            60.7    0.29 60.6  0.22                                 ______________________________________                                          *The wire consistencies dropped from 0.57% to 0.43% and 2.5 t/d of fines       were retained in the sheet rather than lost to the clarifier yet it only       cost 0.44$/ton to recover the brightness loss.                                 Therefore, a 0.6 point tone opacity gain was achieved on both g/m.sup.2        and 45 g/m.sup.2                                                         

                  TABLE IV                                                         ______________________________________                                         WHITEWATER MANAGEMENT                                                                         PRE-    POST                                                                   TRIAL   OPTIMIZATION                                            ______________________________________                                         Save-all                                                                       capacity             15435 1pm 20077                                           cloudy  0.098%       0.067%                                                            consistency                                                            clear consistency                                                                      0.087%       0.050%                                                    Pump 287                                                                       consistency                                                                            0.188%       0.061%                                                    tonnage 4.28 t/j     1.49 t/j                                                  Pump 716                                                                       consistency                                                                            0.128%       0.048%                                                    tonage  7.87 t/j     2.48 t/j                                                  ______________________________________                                    

                  TABLE VII                                                        ______________________________________                                         FIBER LOSSES                                                                           PAPER MACHINE  CLARIFIER  CLARIFIER                                            SEWER          FEED       EFFLUENT                                     DATES   (T/D)          (T/D)      (T/D)                                        ______________________________________                                         1-15 June                                                                              7.6            17.4       3.7                                          23-29 June                                                                              6.7*           14.7*      3.2*                                        30-15 July                                                                             5.1            13.5       3.0                                          ______________________________________                                          *Clear white water after startup.                                        

                  TABLE VIII                                                       ______________________________________                                         STEAM MEASURES                                                                                       ACCORDING TO                                                                   THE INVENTION                                                                  AFTER                                                                PRE-TRIAL OPTIMIZATION                                             ______________________________________                                         Silo temperature                                                                             56° C.                                                                              50.5° C.                                      Silo steam    8.7 t/h     0 t/h                                                Dryer steam                                                                    45 g/m.sup.2  20.4 t/h    21.0 t/h                                             48 g/m.sup.2  23.5 t/h    23 t/h                                               Total steam                                                                    45 g/m.sup.2  39.0 t/h    30.0 t/h                                             48 g/m.sup.2  41.9 t/h    34.7 t/h                                             Ton steam per ton paper                                                                      2.07        1.76                                                 ______________________________________                                    

    __________________________________________________________________________     CONISTENCY AND RETENTION ON MACHINE                                                                               DOSAGES                                                   CONSISTANCIES        1100                                                                               1169                                    REF                                                                               DATE HOUR  HEAD BOX                                                                              WIRE PIT                                                                             RETENTION                                                                              (Kg/J)                                                                             (Kg/J)                                  __________________________________________________________________________      0 16-May     1.070% 0.628%                                                                               41.3%   0   0                                        1 17-May     1.072% 0.630%                                                                               41.2%   0   0                                        2 18-May     1.037% 0.597%                                                                               42.4%   0   0                                        3 19-May     1.034% 0.592%                                                                               42.7%   0   0                                        4 20-May     1.000% 0.595%                                                                               40.5%   0   0                                        5 21-May     1.010% 0.600%                                                                               40.6%   0   0                                        6 22-May     1.016% 0.592%                                                                               41.7%   0   0                                        7 23-May     1.040% 0.600%                                                                               42.3%   0   0                                        8 24-May     1.014% 0.577%                                                                               43.1%   0   0                                        9 25-May     1.024% 0.597%                                                                               41.7%   0   0                                        10                                                                               26-May     1.000% 0.563%                                                                               43.7%   0   0                                        11                                                                               27-May     1.010% 0.584%                                                                               42.2%   0   0                                        12                                                                               01-Jun     1.028% 0.592%                                                                               42.4%   0   0                                        13                                                                               02-Jun     1.008% 0.575%                                                                               43.0%   0   0                                        14                                                                               03-Jun     1.012% 0.570%                                                                               43.7%   0   0                                        15                                                                               05-Jun     0.993% 0.575%                                                                               42.1%   0   0                                        16                                                                               06-Jun     1.037% 0.589%                                                                               43.2%   0   0                                        17                                                                               07-Jun     1.055% 0.625%                                                                               40.8%   0   0                                        18                                                                               10-Jun     1.023% 0.570%                                                                               44.3%   0   0                                        19                                                                               11-Jun     1.058% 0.610%                                                                               42.3%   0   0                                        20                                                                               12-Jun     1.027% 0.547%                                                                               46.7%   0   0                                               STOP                                                                    21                                                                               23-Jun                                                                              08:45 AM                                                                             0.916% 0.441%                                                                               51.9%   0   0                                        22     11:36 AM                                                                             0.934% 0.470%                                                                               49.7%   0   0                                        23     01:28 AM                                                                             0.964% 0.499%                                                                               48.2%   0   0                                        24                                                                               24-Jun                                                                              08:27 AM                                                                             1.013% 0.590%                                                                               41.8%   0   0                                        25     11:07 AM                                                                             1.029% 0.538%                                                                               47.7%   0   0                                        26     01:19 AM                                                                             1.034% 0.557%                                                                               46.1%   0   0                                        27                                                                               25-Jun                                                                              08:36 AM                                                                             1.023% 0.594%                                                                               41.9%   0   0                                        28     10:42 AM                                                                             1.008% 0.564%                                                                               44.0%   0   0                                        29     02:18 AM                                                                             1.013% 0.553%                                                                               45.4%   0   0                                        30                                                                               26-Jun                                                                              01:36 AM                                                                             0.976% 0.573%                                                                               41.3%   0   0                                        31     10:06 AM                                                                             0.958% 0.527%                                                                               45.0%   0   0                                        32     08:54 AM                                                                             0.936% 0.537%                                                                               42.6%   0   0                                        33                                                                               29-Jun                                                                              01:56 AM                                                                             0.912% 0.554%                                                                               39.3%   0   0                                        34                                                                               29-Jun                                                                              02:00 AM                                                                             0.922% 0.501%                                                                               45.7%   45  721                                      35     02:30 AM                                                                             0.940% 0.502%                                                                               46.6%   45  721                                      36     03:00 AM                                                                             0.922% 0.488%                                                                               47.1%   45  691                                      37     03:30 AM                                                                             0.926% 0.493%                                                                               46.8%   45  655                                      38     04:30 PM                                                                             0.920% 0.497%                                                                               46.0%   45  620                                      39     08:30 PM                                                                             0.884% 0.412%                                                                               53.4%   45  735                                      40     09:00 PM                                                                             0.884% 0.420%                                                                               52.5%   45  735                                      41     10:30 PM                                                                             0.804% 0.364%                                                                               54.7%   45  735                                      42     11:50 PM                                                                             0.836% 0.404%                                                                               51.7%   45  735                                      43                                                                               30-Jun                                                                              12:30 AM                                                                             0.860% 0.384%                                                                               55.3%   45  762                                      44     01:30 AM                                                                             0.844% 0.408%                                                                               51.7%   45  762                                      45     02:30 AM                                                                             0.836% 0.424%                                                                               49.3%   45  762                                      46     03:24 AM                                                                             0.868% 0.416%                                                                               52.1%   45  811                                      47     04:30 AM                                                                             0.864% 0.404%                                                                               53.2%   45  811                                      48     08:00 AM                                                                             0.880% 0.460%                                                                               47.7%   45  811                                      49     09:30 AM                                                                             0.920% 0.476%                                                                               48.3%   45  811                                      50     10:30 AM                                                                             0.912% 0.480%                                                                               47.4%   45  811                                      51     11:30 AM                                                                             0.904% 0.468%                                                                               48.2%   38  811                                      52     01:48 PM                                                                             0.884% 0.448%                                                                               49.3%   38  811                                      53     02:30 PM                                                                             0.908% 0.468%                                                                               48.5%   38  676                                      54     03:00 PM                                                                             0.904% 0.464%                                                                               48.7%   38  676                                      55     05:00 PM                                                                             0.920% 0.448%                                                                               51.3%   62  676                                      56     08:30 PM                                                                             0.884% 0.440%                                                                               50.2%   62  676                                      57     10:15 PM                                                                             0.880% 0.444%                                                                               49.5%   62  676                                      58     11:15 PM                                                                             0.880% 0.426%                                                                               51.6%   50  676                                      59                                                                               01-Jul                                                                              12:30 AM                                                                             0.884% 0.438%                                                                               50.5%   50  676                                      60     01:30 AM                                                                             0.896% 0.442%                                                                               50.7%   50  676                                      61     02:30 AM                                                                             0.800% 0.440%                                                                               50.0%   50  676                                      62     03:35 AM                                                                             0.884% 0.436%                                                                               50.7%   50  676                                      63     04:30 AM                                                                             0.880% 0.438%                                                                               50.2%   50  676                                      64     05:25 AM                                                                             0.868% 0.434%                                                                               50.0%   50  676                                      65     08:10 AM                                                                             0.880% 0.450%                                                                               48.0%   50  676                                      66     08:30 AM                                                                             0.904% 0.444%                                                                               50.9%   50  676                                      67     10:36 AM                                                                             0.904% 0.416%                                                                               54.0%   48  676                                      68     11:40 AM                                                                             0.900% 0.428%                                                                               52.4%   48  676                                      69     01:45 PM                                                                             0.916% 0.456%                                                                               50.3%   48  676                                      70     03:00 PM                                                                             0.888% 0.436%                                                                               50.9%   48  676                                      71     04:00 PM                                                                             0.872% 0.436%                                                                               50.0%   35  676                                      72     05:00 PM                                                                             0.872% 0.428%                                                                               50.9%   35  676                                      73     06:00 PM                                                                             0.092% 0.446%                                                                               50.0%   35  676                                      74     08:00 PM                                                                             0.896% 0.440%                                                                               50.9%   35  676                                      75     09:00 PM                                                                             0.884% 0.452%                                                                               48.9%   35  676                                      76     10:15 PM                                                                             0.904% 0.448%                                                                               50.4%   35  676                                      77     10:55 PM                                                                             0.880% 0.456%                                                                               48.2%   35  676                                      78                                                                               02-Jul                                                                              12:05 AM                                                                             0.884% 0.448%                                                                               49.3%   35  691                                      79     01:00 AM                                                                             0.872% 0.436%                                                                               50.0%   35  691                                      80     02:00 AM                                                                             0.888% 0.442%                                                                               50.2%   35  691                                      81     02:55 AM                                                                             0.892% 0.432%                                                                               51.6%   35  608                                      82     08:18 AM                                                                             0.884% 0.446%                                                                               49.5%   35  478                                      83     09:00 AM                                                                             0.884% 0.454%                                                                               48.6%   35  478                                      84     10:15 AM                                                                             0.888% 0.440%                                                                               50.5%   35  349                                      85     11:00 AM                                                                             0.884% 0.440%                                                                               50.2%   35  349                                      86     12:00 PM                                                                             0.872% 0.440%                                                                               49.5%   35  349                                      87     01:57 PM                                                                             0.836% 0.426%                                                                               49.0%   35  349                                      88     03:00 PM                                                                             0.824% 0.418%                                                                               49.3%   35  349                                      89     04:10 PM                                                                             0.816% 0.424%                                                                               48.0%   35  349                                      90     05:00 PM                                                                             0.840% 0.406%                                                                               51.7%   35  349                                      91     06:00 PM                                                                             0.848% 0.432%                                                                               49.1%   35  349                                      92     06:45 PM                                                                             0.828% 0.40a%                                                                               50.7%   35  349                                      93     08:50 PM                                                                             0.826% 0.376%                                                                               54.6%   35  349                                      94     09:55 PM                                                                             0.844% 0.406%                                                                               51.9%   35  349                                      95     11:00 PM                                                                             0.836% 0.414%                                                                               50.5%   35  349                                      96                                                                               03-Jul                                                                              12:00 AM                                                                             0.832% 0.400%                                                                               51.9%   35  349                                      97     01:00 AM                                                                             0.828% 0.408%                                                                               50.7%   35  349                                      98     02:00 AM                                                                             0.844% 0.420%                                                                               50.2%   35  349                                      99     03:00 AM                                                                             0.856% 0.434%                                                                               49.3%   35  386                                     100     04:00 AM                                                                             0.868% 0.430%                                                                               50.5%   35  386                                     101     04:54 AM                                                                             0.864% 0.428%                                                                               50.5%   35  386                                     102     08:10 AM                                                                             0.840% 0.426%                                                                               49.3%   35  386                                     103     09:00 AM                                                                             0.828% 0.426%                                                                               48.6%   35  386                                     104                                                                               TEMP 10:18 AM                                                                             0.832% 0.428%                                                                               48.6%   35  386                                     105                                                                               C.A. 11:15 AM                                                                             0.844% 0.424%                                                                               49.8%   35  386                                     106     12:20 PM                                                                             0.856% 0.426%                                                                               50.2%   35  386                                     107                                                                               56   04:20 PM                                                                             0.868% 0.426%                                                                               50.9%   35  386                                     108                                                                               55   06:25 PM                                                                             0.880% 0.436%                                                                               50.5%   35  386                                     109                                                                               53.5 07:45 PM                                                                             0.892% 0.440%                                                                               50.7%   35  386                                     110                                                                               52.5 08:55 PM                                                                             0.888% 0.440%                                                                               50.5%   35  386                                     111                                                                               52.5 10:04 PM                                                                             0.784% 0.382%                                                                               51.3%   35  386                                     112                                                                               53.5 11:13 PM                                                                             0.860% 0.418%                                                                               51.4%   35  386                                     113                                                                               4 JUIL                                                                              01:24 AM                                                                             0.892% 0.446%                                                                               50.0%   35  386                                     114                                                                               52.5 02:20 AM                                                                             0.896% 0.450%                                                                               49.8%   35  386                                     115                                                                               53   04:10 AM                                                                             0.892% 0.458%                                                                               48.7%   35  386                                     116                                                                               53   06:00 AM                                                                             0.904% 0.454%                                                                               49.8%   35  386                                     117                                                                               52.5 07:57 AM                                                                             0.900% 0.464%                                                                               48.4%   35  386                                     118                                                                               52.5 08:55 AM                                                                             0.912% 0.474%                                                                               48.0%   35  386                                     119                                                                               52.5 10:05 AM                                                                             0.932% 0.474%                                                                               49.1%   35  386                                     120                                                                               54   12:00 PM                                                                             0.936% 0.464%                                                                               50.4%   35  386                                     121                                                                               --   02:15 PM                                                                             0.928% 0.483%                                                                               48.0%   35  372                                     122                                                                               54   05:00 PM                                                                             0.932% 0.472%                                                                               49.4%   35  372                                     123                                                                               53.5 07:27 PM                                                                             0.908% 0.468%                                                                               48.5%   35  372                                     124                                                                               54   09:42 PM                                                                             0.948% 0.474%                                                                               50.0%   35  372                                     125                                                                               53   11:10 PM                                                                             0.916% 0.476%                                                                               48.0%   35  372                                     126                                                                               5 JUIL                                                                              12:10 AM                                                                             0.964% 0.478%                                                                               50.4%   35  372                                     127                                                                               53.5 02:25 AM                                                                             0.944% 0.448%                                                                               52.5%   35  372                                     128                                                                               54   04:03 AM                                                                             0.952% 0.490%                                                                               48.5%   35  372                                     129                                                                               54   05:05 AM                                                                             0.920% 0.484%                                                                               47.4%   35  372                                     130                                                                               53.5 07:05 AM                                                                             0.944% 0.472%                                                                               50.0%   35  372                                     131                                                                               54   08:37 AM                                                                             0.952% 0.484%                                                                               49.2%   35  372                                     132                                                                               55   10:50 AM                                                                             0.952% 0.496%                                                                               47.9%   35  372                                     133                                                                               55   02:30 PM                                                                             0.988% 0.502%                                                                               49.2%   34  372                                     134                                                                               55   04:30 PM                                                                             0.988% 0.494%                                                                               50.0%   33  301                                     135                                                                               54   07:15 PM                                                                             0.984% 0.482%                                                                               51.0%   32  301                                     136                                                                               54   08:25 PM                                                                             0.980% 0.480%                                                                               51.0%   31  301                                     137                                                                               53   09:36 PM                                                                             0.948% 0.490%                                                                               48.3%   30  301                                     138                                                                               53   11:47 PM                                                                             0.996% 0.498%                                                                               50.0%   29  301                                     139                                                                               6 JUIL                                                                              01:12 AM                                                                             0.996% 0.492%                                                                               50.6%   28  301                                     140                                                                               54.5 02:55 AM                                                                             0.964% 0.488%                                                                               49.4%   27  301                                     141                                                                               54   04:04 AM                                                                             0.948% 0.496%                                                                               47.7%   26  301                                     142     05:30 AM                                                                             0.968% 0.492%                                                                               49.2%   25  301                                     143                                                                               55   07:15 AM                                                                             0.960% 0.480%                                                                               49.2%   25  301                                     144     10:30 AM                                                                             0.964% 0.498%                                                                               48.3%   25  301                                     145     11:30 AM                                                                             0.932% 0.492%                                                                               47.2%   25  301                                     146     02:05 PM                                                                             0.920% 0.486%                                                                               47.2%   25  301                                     147     04:15 PM                                                                             0.900% 0.468%                                                                               48.0%   25  301                                     148     08:20 PM                                                                             0.832% 0.428%                                                                               48.6%   25  301                                     149     09:20 PM                                                                             0.916% 0.455%                                                                               50.4%   25  301                                     150                                                                               54   11:04 PM                                                                             0.936% 0.479%                                                                               48.8%   25  301                                     151                                                                               7 JUIL                                                                              12:30 AM                                                                             0.952% 0.514%                                                                               46.0%   25  301                                     152                                                                               54.5 01:34 AM                                                                             0.924% 0.511%                                                                               44.7%   25  301                                     153                                                                               54   03:30 AM                                                                             0.916% 0.506%                                                                               44.8%   25  301                                     154     04:22 AM                                                                             0.950% 0.500%                                                                               47.4%   25  301                                     155                                                                               54   05:35 AM                                                                             0.944% 0.515%                                                                               45.4%   25  301                                     156     07:00 AM                                                                             0.932% 0.508%                                                                               45.5%   25  301                                     157                                                                               54   07:49 AM                                                                             0.936% 0.505%                                                                               46.0%   25  301                                     158     09:12 AM                                                                             0.896% 0.484%                                                                               46.0%   25  301                                     159     10:00 AM                                                                             0.928% 0.474%                                                                               48.9%   25  301                                     160     11:40 AM                                                                             0.928% 0.504%                                                                               45.7%   25  301                                     161     02:00 PM                                                                             0.892% 0.500%                                                                               43.9%   25  301                                     162     04:30 PM                                                                             0.932% 0.496%                                                                               46.8%   25  301                                     163     06:40 PM                                                                             0.900% 0.492%                                                                               45.3%   25  301                                     164     08:10 PM                                                                             0.992% 0.517%                                                                               47.9%   25  301                                     165                                                                               54.5 10:09 PM                                                                             0.916% 0.447%                                                                               51.2%   25  301                                     166                                                                               53   11:28 PM                                                                             0.930% 0.468%                                                                               49.7%   25  301                                     167                                                                               8 JUIL                                                                              12:42 AM                                                                             0.952% 0.499%                                                                               47.6%   25  301                                     168                                                                               53   02:25 AM                                                                             0.950% 0.511%                                                                               46.2%   25  301                                     169     04:15 AM                                                                             0.966% 0.515%                                                                               46.7%   25  301                                     170                                                                               50   08:58 PM                                                                             0.796% 0.344%        25  301                                     171                                                                               52.5 10:49 PM                                                                             0.866% 0.396%                                                                               54.3%   25  301                                     172                                                                               52.5 11:55 PM                                                                             0.900% 0.441%                                                                               51.0%   25  301                                     173                                                                               9 JUIL                                                                              01:12 AM                                                                             0.912% 0.452%                                                                               50.4%   20  301                                     174                                                                               53.5 02:27 AM                                                                             0.910% 0.461%                                                                               49.3%   20  301                                     175                                                                               52   03:55 AM                                                                             0.886% 0.459%                                                                               48.2%   20  301                                     176                                                                               52   05:04 AM                                                                             0.958% 0.483%                                                                               49.6%   20  301                                     177     06:25 AM                                                                             0.942% 0.481%                                                                               48.9%   20  301                                     178                                                                               52   07:28 AM                                                                             0.944% 0.480%                                                                               49.2%   25  301                                     179     10:06 AM                                                                             0.944% 0.485%                                                                               48.6%   25  301                                     180     11:52 AM                                                                             0.946% 0.496%                                                                               47.6%   25  390                                     181     01:43 PM                                                                             0.940% 0.485%                                                                               48.4%   25  390                                     182     05:50 PM                                                                             0.950% 0.483%                                                                               49.1%   25  390                                     183     07:00 PM                                                                             0.956% 0.493%                                                                               48.4%   25  390                                     184                                                                               53.5 09:34 PM                                                                             0.818% 0.395%                                                                               51.7%   25  390                                     185                                                                               53.5 11:00 PM                                                                             0.918% 0.449%                                                                               51.1%   25  390                                     186                                                                               53   12:00 AM                                                                             0.952% 0.510%                                                                               46.4%   25  390                                     187                                                                               53   01:04 AM                                                                             0.960% 0.513%                                                                               46.6%   25  390                                     188                                                                               53.5 02:06 AM                                                                             0.942% 0.495%                                                                               47.5%   25  390                                     189                                                                               53.5 03:25 AM                                                                             0.938% 0.490%                                                                               47.8%   25  390                                     190                                                                               53.5 04:33 AM                                                                             0.936% 0.478%                                                                               48.9%   25  390                                     191                                                                               53.5 05:36 AM                                                                             0.944% 0.484%                                                                               48.7%   25  390                                     192                                                                               53   06:30 AM                                                                             0.952% 0.486%                                                                               48.9%   30  390                                     193                                                                               53   07:34 AM                                                                             0.934% 0.475%                                                                               49.1%   35  390                                     194                                                                               52.5 09:00 AM                                                                             0.824% 0.392%                                                                               52.4%   29  390                                     195                                                                               10 JUIL                                                                             10:50 AM                                                                             0.894% 0.443%                                                                               50.4%   28  390                                     196     02:54 PM                                                                             0.856% 0.440%                                                                               48.6%   28  390                                     197     04:33 PM                                                                             0.848% 0.427%                                                                               49.6%   28  390                                     198                                                                               52.5 09:25 PM                                                                             0.878% 0.456%                                                                               48.1%   28  390                                     199                                                                               53   10:20 PM                                                                             0.876% 0.461%                                                                               47.4%   28  390                                     200                                                                               53   11:30 PM                                                                             0.880% 0.465%                                                                               47.2%   28  390                                     201                                                                               52.5 12:30 AM                                                                             0.884% 0.466%                                                                               47.3%   28  390                                     202                                                                               52   01:30 AM                                                                             0.886% 0.462%                                                                               47.9%   28  390                                     203                                                                               52.5 02:36 AM                                                                             0.886% 0.474%                                                                               46.5%   28  390                                     204                                                                               11 JUIL                                                                             05:01 AM                                                                             0.882% 0.461%                                                                               47.7%   28  390                                     205                                                                               51.5 06:04 AM                                                                             0.864% 0.458%                                                                               47.0%   26  390                                     206                                                                               52.5 07:09 AM                                                                             0.890% 0.468%                                                                               47.4%   28  390                                     207                                                                               53   08:13 AM                                                                             0.894% 0.465%                                                                               48.0%   28  390                                     208     09:45 AM                                                                             0.916% 0.477%                                                                               47.9%   28  390                                     209     11:35 AM                                                                             0.920% 0.501%                                                                               45.5%   28  390                                     210     02:40 PM                                                                             0.906% 0.477%                                                                               47.4%   28  390                                     211     04:18 PM                                                                             0.908% 0.489%                                                                               46.1%   28  390                                     212                                                                               52   10:55 PM                                                                             0.924% 0.501%                                                                               45.8%   28  390                                     213                                                                               52.5 12:12 AM                                                                             0.918% 0.493%                                                                               46.3%   28  390                                     214                                                                               52.5 01:36 AM                                                                             0.886% 0.480%                                                                               45.8%   28  390                                     215                                                                               52   02:37 AM                                                                             0.896% 0.481%                                                                               46.3%   28  390                                     216                                                                               12 JUIL                                                                             03:42 AM                                                                             0.892% 0.473%                                                                               47.0%   28  390                                     217                                                                               52.5 04:45 AM                                                                             0.882% 0.460%                                                                               47.8%   28  390                                     218                                                                               52   05:52 AM                                                                             0.876% 0.463%                                                                               47.1%   28  292                                     219                                                                               52.5 06:55 AM                                                                             0.878% 0.461%                                                                               47.5%   30  292                                     220     07:55 AM                                                                             0.892% 0.458%                                                                               48.7%   30  292                                     221     09:15 AM                                                                             0.880% 0.466%                                                                               47.0%   30  531                                     222     10:25 AM                                                                             0.874% 0.461%                                                                               47.3%   30  531                                     223     11:30 AM                                                                             0.844% 0.428%                                                                               49.3%   30  531                                     224     12:25 PM                                                                             0.854% 0.447%                                                                               47.7%   30  531                                     225     01:35 PM                                                                             0.882% 0.450%                                                                               49.0%   30  531                                     226     02:35 PM                                                                             0.870% 0.460%                                                                               47.1%   30  531                                     227     03:40 PM                                                                             0.878% 0.458%                                                                               47.8%   30  531                                     228     04:20 PM                                                                             0.866% 0.457%                                                                               47.2%   30  531                                     229     05:25 PM                                                                             0.848% 0.447%                                                                               47.3%   30  531                                     230                                                                               52.5 08:00 PM                                                                             0.880% 0.473%                                                                               46.3%   30  531                                     231                                                                               52   09:15 PM                                                                             0.862% 0.460%                                                                               46.6%   30  531                                     232                                                                               52.5 10:23 PM                                                                             0.878% 0.466%                                                                               46.9%   30  531                                     233     11:20 PM                                                                             0.882% 0.468%                                                                               46.9%   30  531                                     234                                                                               52.5 12:20 AM                                                                             0.876% 0.462%                                                                               47.3%   30  531                                     235                                                                               13 JUIL                                                                             01:25 AM                                                                             0.874% 0.472%                                                                               46.0%   30  531                                     236                                                                               52   02:33 AM                                                                             0.894% 0.476%                                                                               46.8%   30  531                                     237                                                                               52   03:34 AM                                                                             0.888% 0.486%                                                                               45.3%   30  531                                     238                                                                               52   04:36 AM                                                                             0.882% 0.472%                                                                               46.5%   30  531                                     239                                                                               52   05:34 AM                                                                             0.880% 0.471%                                                                               46.5%   30  531                                     240                                                                               52   06:35 AM                                                                             0.878% 0.473%                                                                               46.1%   30  337                                     241                                                                               52   07:35 AM                                                                             0.894% 0.478%                                                                               46.5%   30  337                                     242     08:50 AM                                                                             0.912% 0.473%                                                                               48.1%   30  337                                     243     10:36 AM                                                                             0.914% 0.469%                                                                               48.7%   30  337                                     244     11:48 AM                                                                             0.924% 0.484%                                                                               47.6%   30  337                                     245     11:58 AM                                                                             0.928% 0.504%                                                                               45.7%   30  337                                     246     12:08 PM                                                                             0.962% 0.514%                                                                               46.6%   30  337                                     247     12:30 PM                                                                             0.962% 0.510%                                                                               47.0%   30  337                                     248     02:52 PM                                                                             0.958% 0.474%                                                                               50.5%   30  337                                     249     03:04 PM                                                                             0.946% 0.484%                                                                               48.8%   30  337                                     250     03:16 PM                                                                             0.966% 0.483%                                                                               50.0%   30  337                                     251     03:30 PM                                                                             0.930% 0.488%                                                                               47.5%   30  337                                     252     04:50 PM                                                                             0.910% 0.468%                                                                               48.6%   30  337                                     253                                                                               52   08:10 PM                                                                             0.922% 0.466%                                                                               49.5%   30  337                                     254                                                                               52   09:15 AM                                                                             0.924% 0.466%                                                                               49.6%   30  337                                     255                                                                               52   10:25 PM                                                                             0.924% 0.477%                                                                               48.4%   30  337                                     256                                                                               52   11:30 PM                                                                             0.950% 0.488%                                                                               48.6%   30  337                                     257                                                                               14 JUIL                                                                             12:33 AM                                                                             0.928% 0.472%                                                                               49.1%   30  337                                     258                                                                               52   01:48 AM                                                                             0.930% 0.462%                                                                               50.3%   30  337                                     259                                                                               51   03:25 AM                                                                             0.914% 0.472%                                                                               48.4%   30  337                                     260                                                                               51   05:15 AM                                                                             0.928% 0.469%                                                                               49.5%   30  337                                     261                                                                               51   06:38 AM                                                                             0.948% 0.482%                                                                               49.2%   20  337                                     262                                                                               51.5 07:36 AM                                                                             0.992% 0.509%                                                                               48.7%   15  337                                     263     09:00 AM                                                                             0.956% 0.535%                                                                               44.0%   10  337                                     264     10:00 AM                                                                             0.950% 0.485%                                                                               48.9%   25  337                                     265     07:38 AM                                                                             0.904% 0.485%                                                                               46.3%   30  337                                     266     01:30 PM                                                                             0.928% 0.481%                                                                               48.2%   30  337                                     267     03:15 PM                                                                             0.902% 0.465%                                                                               48.4%   30  337                                     268           0.882% 0.481%                                                                               45.5%   30  337                                     269                                                                               51   08:00 PM                                                                             0.886% 0.460%                                                                               48.1%   30  337                                     270                                                                               50.5 09:40 PM                                                                             0.900% 0.474%                                                                               47.3%   30  337                                     271     10:34 PM                                                                             0.878% 0.461%                                                                               47.5%   30  337                                     __________________________________________________________________________     SAVEALL TEST RESULTS                                                                            CLOUDY                                                                               CLOUDY                                                                               CLEAR                                                                               CLEAR                                                                               THICK-                                                                              VACU-                                                                               VACU-                                  IN FLOW WATER WATER WATER                                                                               WATER                                                                               ENED UM   UM                            DATE HOUR                                                                               kl/min  no 1  no 2  no 1 no 2 PULP no.1 no.2 REMARKS                  __________________________________________________________________________              16.0                                                                               1.041%                                                                             0.110%                                                                               0.114%                                                                               0.112%                                                                              0.139%                                                                              3.216%                                                                              25   24                            22 MAY   15.4                                                                               1.026%                                                                             0.111%                                                                               0.117%                                                                               0.143%                                                                              0.083%                                                                              3.853%                                                                              38   36                            2 JUNE   15.0                                                                               1.040%                                                                             0.066%                                                                               0.079%                                                                               0.061%                                                                              0.028%                                                                              3.700%                                  9 JUNE   15.3                                                                               0.888%                                                                             0.095%                                                                               0.094%                                                                               0.094%                                                                              0.039%                                                                              3.074%                                                                              36   34                                     15.4                                                                               0.992%                                                                             0.098%      0.087%                                            4 JULY                                                                              15:15                                                                              20.0                                                                               0.710%                                                                             0.086%                                                                               0.096%                                                                               0.056%                                                                              0.070%    33   35                            5     1:30                                                                              20.0                                                                               0.756%                                                                             0.076%                                                                               0.088%                                                                               0.056%                                                                              0.060%    36   35                                  7:30                                                                              20.0                                                                               0.710%                                                                             0.080%                                                                               0.084%                                                                               0.040%                                                                              0.072%    32   33                                 16:15                                                                              20.3                                                                               0.752%                                                                             0.078%                                                                               0.090%                                                                               0.072%                                                                              0.082%                                                                              2.800%                                                                              38   40                                 20:52                                                                              20.1                                                                               0.676%                                                                             0.072%                                                                               0.081%                                                                               0.044%                                                                              0.044%                                                                              3.600%                                                                              38   35                            6     0:17                                                                              20.1                                                                               1.104%                                                                             0.090%                                                                               0.084%     BREAK-                                                                              3.530%                                                                              21   31   DURING                                                     AGE                 BREAKAGE                       3:50                                                                              20.1                                                                               0.698%                                                                             0.090%                                                                               0.064%                                                                               0.060%                                                                              0.070%                                                                              3.620                                                                               30                                       7:40                                                                              20.1                                                                               0.816%                                                                             0.072%                                                                               0.104%                                                                               0.068%                                                                              0.086%                                                                              3.120%                                       14:20                                                                              19.2                                                                               0.968%                                                                             0.070%                                                                               0.072%                                                                               0.052%                                                                              0.064%                                                                              2.010%                                                                              35   33                                 22:12                                                                              18.3                                                                               0.954%                                                                             0.063%                                                                               0.066%                                                                               0.054%                                                                              0.056%                                                                              3.800%                                                                              33   29                            7     2:07                                                                               0.0                                                                               0.864%                                                                             0.076%                                                                               0.076%                                                                               0.058%                                                                              0.072%                                                                              3.760%                                                                              25   28                                  5:55                                                                              19.3                                                                               0.844%                                                                             0.086%                                                                               0.080%                                                                               0.062%                                                                              0.050%                                                                              3.480%                                                                              33   25                            8     0:00                                                                              18.6                                                                               0.764%                                                                             0.064%                                                                               0.076%                                                                               0.054%                                                                              0.052%                                                                              3.640%                                                                              34   30                                 11:00                                                                              20.0                                                                               0.678%                                                                             0.054%                                                                               0.062%                                                                               0.046%                                                                              0.046%                                                                              2.420%                                       21:50                                                                              18.6                                                                               0.802%                                                                             0.039%                                                                               0.050%                                                                               0.032%                                                                              0.014%                                                                              2.960%                                                                              24   20   FEW AFTER                9     1:42                                                                              18.6                                                                               0.762%                                                                             0.064%                                                                               0.050%                                                                               0.056%                                                                              0.034%                                                                              3.580%                                                                              31   24                                  6:50                                                                              20.0                                                                               0.696%                                                                             0.074%                                                                               0.070%                                                                               0.056%                                                                              0.040%                                                                              3.900%                                                                              34   24                                 22:07                                                                              19.1                                                                               0.728%                                                                             0.054%                                                                               0.062%                                                                               0.046%                                                                              0.058%                                                                              2.960%                                                                              27   22                            10    2:35                                                                              19.4                                                                               0.866%                                                                             0.068%                                                                               0.064%                                                                               0.046%                                                                              0.054%                                                                              3.140%                                                                              35   24                                  7:15                                                                              20.0                                                                               0.644%                                                                             0.062%                                                                               0.066%                                                                               0.044%                                                                              0.044%                                                                              3.620%                                                                              37   24                                 22:45                                                                              20.0                                                                               0.760%                                                                             0.074%                                                                               0.068%                                                                               0.062%                                                                              0.054%                                                                              3.740%                                                                              39   23                            11    2:05                                                                              20.0                                                                               0.950%                                                                             0.066%                                                                               0.074%                                                                               0.046%                                                                              0.052%                                                                              3.140%                                                                              39   21                                  6:50                                                                              20.5                                                                               0.798%                                                                             0.070%                                                                               0.074%                                                                               0.054%                                                                              0.042%                                                                              3.760%                                                                              37   19                            12    1:20                                                                              20.5                                                                               0.680%                                                                             0.074%                                                                               0.070%                                                                               0.070%                                                                              0.062%                                                                              2.920%                                                                              33   17                                  6:15                                                                              20.0                                                                               1.038%                                                                             0.056%                                                                               0.056%                                                                               0.048%                                                                              0.052%                                                                              3.500%                                                                              40   22                                 23:10                                                                              20.0                                                                               0.810%                                                                             0.050%                                                                               0.048%                                                                               0.038%                                                                              0.038%                                                                              3.700%                                                                              24                                 13    3:05                                                                              20.0                                                                               0.632%                                                                             0.070%                                                                               0.076%                                                                               0.052%                                                                              0.056%                                                                              3.440%                                                                              24                                       6:50                                                                              20.0                                                                               0.644%                                                                             0.074%                                                                               0.078%                                                                               0.048%                                                                              0.044%                                                                              3.960%                                                                              36   26                                 20:15                                                                              20.0                                                                               0.850%                                                                             0.070%                                                                               0.070%                                                                               0.046%                                                                              0.038%                                                                              3.100%                                                                              42   27                            14    0:10                                                                              20.0                                                                               0.760%                                                                             0.054%                                                                               0.060%                                                                               0.028%                                                                              0.028%                                                                              3.390%                                                                              40   26                                  5:40                                                                              20.0                                                                               0.998%                                                                             0.066%                                                                               0.074%                                                                               0.060%                                                                              0.074%                                                                              3.410%                                                                              36   26                                 20:25                                                                              20.0                                                                               0.768%                                                                             0.060%                                                                               0.074%                                                                               0.056%                                                                              0.068%                                                                              3.300%                                                                              35   24                            16   21:42                                                                              19.0                                                                               0.732%                                                                             0.040%                                                                               0.046%                                                                               0.030%                                                                              0.030%                                                                              3.300%                                                                              35   22                            17    2:25                                                                              19.0                                                                               0.790%                                                                             0.050%                                                                               0.054%                                                                               0.028%                                                                              0.046%                                                                              3.627%                                                                              29   25                                  6:15                                                                              20.0                                                                               0.780%                                                                             0.060%                                                                               0.066%                                                                               0.048%                                                                              0.058%                                                                              3.800%                                                                              34   32                            __________________________________________________________________________ 

What is claimed is:
 1. In a method for the production of paper, the improvement wherein one or several naphthalene sulphonate salt(s) selected from the group consisting of sodium, potassium, ammonium, calcium and aluminum salt(s) of naphthalene sulphonate, in a granulated form or as a condensed or diluted solution, and a solution of one or several polyethylene oxide having a molecular weight varying from 1×10⁶ to 13×10⁶ are admixed with a mixture comprising lignocellulosic fibers and fines and an aqueous medium, providing that:said polyethylene oxide is admixed in said mixture when said mixture already contains at least a part of said naphthalene sulphonate salt(s); the polyethylene oxide being admixed in such an amount as to represent from 10 to 700 grams per ton of dry matter of said mixture; and the naphthalene sulphonate salt(s) being admixed in such an amount as to represent from 50 to 1500 grams per ton of dry matter of said mixture.
 2. A method according to claim 1, wherein said naphthalene sulphonate salt(s) comprise a condensed or diluted solution and a sufficient aqueous medium is present in said mixture so that said mixture is pumpable.
 3. A method according to claim 1, wherein said naphthalene sulphonate salt(s) comprise a condensed or diluted solution and a sufficient aqueous medium is present to define an aqueous suspension.
 4. A method according to claim 3, wherein said aqueous suspension is laid on a wire screen of a paper machine to form a sheet of paper.
 5. A method according to claim 3, wherein said aqueous medium comprises clarified white water collected in a wire pit of a paper or pulp machine.
 6. A method according to claim 3, further comprising collecting white water add recycling said white water to dilute said aqueous suspension.
 7. A method according to claim 4, further comprising collecting white water comprising unretained naphthalene sulphonate salts and polyethylene oxide, and recycling said white water to prepare said mixture or as a dilution water for said aqueous suspension.
 8. A method according to claim 7, wherein an equilibrium is achieved between the amount of naphthalene sulphonate salt(s) and polyethylene oxide retained on the wire screen and the amount of naphthalene sulphonate salt(s) and polyethylene oxide collected in the white water and adding to said mixture or said aqueous suspension an amount of naphthalene sulphonate salt(s) and polyethylene oxide equivalent to the amount retained in the paper.
 9. A method according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein polyethylene oxide has a molecular weight varying from 4.5×10⁶ to 12×10⁶.
 10. A method according to claim 9, wherein there is further admixed to said mixture an enhancer consisting of a polyaluminum sulphate.
 11. A method according to claim 9, wherein is further admixed to said mixture an enhancer consisting of a polyaluminum silicate sulphate.
 12. A method according to claim 9, wherein there is further admixed to said mixture an enhancer consisting of a sodium aluminate.
 13. A method according to claim 9, wherein there is further admixed to said aqueous mixture an enhancer consisting of polyaluminum chloride.
 14. A method according to claim 9, wherein there is further admixed to said mixture an enhancer consisting of magnesium hydroxide.
 15. A method according to claim 9, wherein there is further admixed to said mixture an enhancer consisting of bentonite.
 16. A method according to claim 9, wherein polyethylene oxide is admixed with the mixture to represent from 30 to 100 grams per ton of dry matter of said mixture.
 17. A method according to claim 16, wherein naphthalene sulphonate salt(s) is(are) admixed with the mixture to represent an amount 50 to 500 grams/ton of dry matter of said mixture.
 18. A method of improving a retention of lignocellulosic fibers and fines, from a mixture comprising said lignocellulosic fibers and fines in an aqueous medium, on a wire screen and to improve a drainage of the aqueous medium, comprising adding to said mixture one or several naphthalene sulphonate salt(s) selected from the group consisting of sodium, potassium ammonium, calcium and aluminum salt(s), said salt(s) being in a granulated form or as a condensed or diluted solution, and a solution of one or several polyethylene oxide having a molecular weight varying from 1×10⁶ to 13×10⁶ ; the polyethylene oxide being admixed in such an amount as to represent from 10 to 700 grams per ton of dry matter of said mixture and the naphthalene sulphonate salt(s) being admixed in such an amount as to represent from 50 to 1500 grams per ton of dry matter of said mixture.
 19. A method according to claim 18, wherein said naphthalene sulphonate salt(s) comprise a condensed or diluted solution, and a sufficient aqueous medium is present in said mixture so that said mixture is pumpable.
 20. A method according to claim 18, wherein said naphthalene sulphonate salt(s) comprise a condensed or diluted solution, and a sufficient aqueous medium is present to define an aqueous suspension.
 21. A method according to claim 20, wherein said aqueous suspension is laid on a wire screen of a paper machine to form a sheet of paper.
 22. A method according to claim 20, wherein said aqueous medium comprises clarified white water collected in a wire pit of a paper or pulp machine.
 23. A method according to claim 20, further comprising collecting white water and recycling said white water to dilute said aqueous suspension.
 24. A method according to claim 20, further comprising collecting white water comprising unretained naphthalene sulphonate salts and polyethylene oxide, and recycling said white water to prepare said mixture or as a dilution water for said aqueous suspension.
 25. A method according to claim 24, wherein an equilibrium is achieved between the amount of naphthalene sulphonate salt(s) and polyethylene oxide retained on the wire screen and the amount of naphthalene sulphonate salt(s) and polyethylene oxide collected in the white water and adding to said mixture or said aqueous suspension, an amount of naphthalene sulphonate salt(s) and polyethylene oxide equivalent to the amount retained in the paper.
 26. A method according to claim 18, 19, 20, 21, 22, 23, 24 or 25 wherein polyethylene oxide has a molecular weight varying from 4.5×10⁶ to 12×10⁶ .
 27. A method according to claim 26, wherein there is further admixed to said mixture an enhancer consisting of a polyaluminum sulphate.
 28. A method according to claim 26, wherein there is further admixed to said mixture an enhancer consisting of a polyaluminum silicate sulphate.
 29. A method according to claim 26, wherein there is further admixed to said mixture an enhancer consisting of a sodium aluminate.
 30. A method according to claim 26, wherein there is further admixed to said mixture an enhancer consisting of polyaluminum chloride.
 31. A method according to claim 26, wherein there is further admixed to said mixture an enhancer consisting of magnesium hydroxide.
 32. A method according to claim 26, wherein there is further admixed to said mixture an enhancer consisting of bentonite.
 33. A method according to claim 26, wherein polyethylene oxide is admixed with the mixture to represent from 30 to 100 grams per ton of dry matter of said mixture.
 34. A method according to claim 33, wherein naphthalene sulphonate salt(s) is(are) admixed with the mixture to represent an amount 100 to 500 grams/ton of dry matter of said mixture. 